Multibilling platen equipment



Jan. 19 1926.`

H. A. foon-ORM=` MULTI-ILLING PLATEN EQUIPMENT i; Filed .AugustV 24.1921 s sheets-.sheet 1 (gn/Muto?) o f .m

Jan. 19 1926.

H. A. FOOTHORAP lMULTIMILLING `PLA'IEN EQUIPMENT 8 Sheets-Sheet 2 FiledAugust 24. 1921 Jan. 19 1926. 1,569,917

H. A. FooTHoRAP MULTIBILL IVNG1 PLATEN EQUI PMENT vFiled August 24. 19218 Sheets-Sheet 5 sheets-sheet 4 (jh/m1416015;

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,H. A. FCJoTHoFmP` MULTiI BILLING PLATIEN EQUI PMENT Filed August 24.1921 Iao Patented Jan.'4 19,

" uNl-Ti-:D sfr'ATEsPATEN-T OFFICE Hanny AnTHUn Foo'rHonAP, onHARRISBURG, rnNNsYLvANLA, AssIGNoR To ELLIOTT-FISHER COMPANY, AconronATIoNoF DELAWARE.'

MULTIBILLING PLATEN 'EQUIPMENT'.

Application filed August 24, 1921. seriai No. 494,943.

To all inkom t may] concern.'

Be it known that HARRY AfFoo'rHoR'AP, a citizen of the United States,residing at Harrisburg, in the county of Dauphin and 5 State ofPennsylvania, has invented cery tain new and useful Improvements inMultibilling PlatenEquipment, of which the vfollowing is aspecification, reference being had therein to the accompanying drawingThis invention relates `to a manifolding platen for Atypewritingmachines and is directed,` more particularly, to the novel constructionand equipment of the platen l" of a typewriter of the flat platen class:l

Theobject of ftheinvention, stated generally, is to produce an extremelysimple and highly eflicient platen for various classes of work and moreparticularly what has-come to be known .as muti-billing' or multiple`con- *9 tinuous form writin 'To the accom lighment oflthis object,

- and others subor inate thereto, as. will appear more fully, oneembodiment of the invention resides in the construction and ar- 5rangement of artsl to be hereinafter described in detail, illustrated inthe accompanying drawings and defined in the xappended claims.

In said drawings: Figure l is a top plan viewpof an Elliott- Fisherlaten constructed, arranged and equippe i'naccordance with my invention.

Figure '2 is a ylongitudinal section on the line 2 2 of Figure 1. p

Figure 3 is a bottom plan view thereof.

Figure 4 is a longitudmal section of the front end of the platen on asomewhat enf.

parts in normal po Figure 6 is a transverse section on the` Vline 6 6 ofFigure 4.

Figure 7 is asimilar view on the 11ne l 45 7 7 of Figure 4.

Figure 8 is a transverse section designed,

more particularly, to show the transverse, carbons and the arrangementof the carbon"v clamps.

l Figure 9 is away at intervals, and showing, more particularly, therelation of the paper and car-A bon to the paper holding clamps.

with fan old forms which are to be strip 'prvided4 with a stripper.

Figure 10 is a section ofthe rear end of the structure with the paperroll rack and' portng'fr'ame in place and equipped with carbon holdersarranged for use 1n connection with floating carbons and fan fold forms.I if l i Figure 13 is adetailed perspective 'view of the frame of thecarbon holder.

Figure 14 is a plan 4viewof the platen structure having the carbonholding frame in use, but su porting the carbon holders and strip ersesigned for use in connection ed or severed before P position.

.Figure 15 is a longitudinal vsection of the rear end of Figure 14. p

Figurev 16 .is a detail perspective view showing one of the carbon 4holding blades v.Figure 17 is a sectional ject matter of Figure 16.

i 1 indicates the platenfframe, including longitudinal side membeis Qand3; transverse vview of the subpassing to the writing members 4, 5 andAGfextending between the side members?l and 3, vand a Apair oflongitudinal platen guides 7 and u8 extending be- `tw'een the framemembers 1 and 5 and spaced ysomewhat 'from the side members 2 and 3. Theside members 2 and 23 are surmounted by combined tracks or guides 9 and10 upon.

which moves, in a manner well understood in the art, the line spacerameof the `typewriter.`

It may be mentioned in passing that in the typeof machine with whichthis invention is more particularly concerned,`the line space frametraverses the guides 9 Aand 10 and supports the carriage which movestransversely ofthe platen and is equippled with downwardly` actingAprinting mec nism and the various other appurtenances of a typewritingmachine.

able material, and is located between the guide members 7 and S andterminates short of the members 5 and -6 of the frame structure?.`In'eertain aspects of the invention.

The platen proper 11 is in the form ofa: s flat plate covered withrubber, or other suita longitudinal section, broken it is immaterialwhether or not the platen is fixed to its supporting frame. Otheraspects of the invention contemplate the movement of the platen propertoward and from the writing plane. I have therefore lshown aplatenmounting which conteniplates this movement. At its front edge,

. the platen 11 is hinged to the supporting frame by hinges 12. Thesehinges may be varied within wide limits, but preferably 1ncludeprovision for the easy assembling of 18 encircling vertical guide rods19 dependling fiom the platen and passed through adjustable bushings 20in guides 21 carried by the frame members 7 and 8, as shown in l Figure7." The guide rods 19 are provided with heads 22 at their lower endsland limit the upward movement of the platen by engagement with thelower ends ofthe busliings 20. It will be noted that this character ofsupporting structureldoes not permit extended movement of thewplaten,but by comparing the positions -of -the platen in Figures 4 and 5, itwill beseenv that its movement from the writing plane is slight, and canbe easily accommodated.

Associated with the platen are'front and rear paper clamps 23 and 24.The front clamp 23 is in the form of a plate extending transversely overthe platen at its front en d and preferably serrated along itslongitudinal ed es, as shown. This clamping plate is carried by angulararms 25 accommodated by recesses 26 in the members 7 and 8 and securedto a transverse rock shaft 27.y

The shaft 27 is afforded suitable bearings in the frame members 7 and 8and may bel oscillated to move the clamp 23 toward and from itseffective clamping position. (Compare Figures 4 and 5.) The rear clampis of open throat construction and consists of two clamping plates 28carried by the mem* bers 7 and 8 and extended inwardly, therefromimmediately-in rear of the platen proper 11. Coacting with the plates 28is a clamping bar 29, the ends of which underlie the plates 28. The bar29 is carried by a block 30 having an open sided slot or seat 31 for theedge-wise reception ofthe bar 29. The bar does not extend quite to thebottom of the seat and is secured'in place by a pin 32 screwed into theblock, and passed through the bar, as shown in Figure 9. This characterof mounting provides for slight compensating movement of the bar 29which may rock slightly on the pin 32 to accommodate itself to the papersheets interposed between fected by rocking the shafts 27 and B3. The imovement of the platen fromahe writing plane, to facilitate the feedingadjustment or replacement of the work, is effected by the rocking of theshaft 33. This end is attained byextending forwardly from the rear4 rockshaft 33 a pair of platen depressing arms 34, the ends of which extendthrough comparatively large apertures in brackets 36, secured toranddepending from the platen see Figures 3 and 7). In the normal positionsof the parts, the arms 34 are practically centered in the apertures, theen largement of which provides for limited movement of the arms With'therock shaft 33 before the brackets'are engaged and the platen isdepressed by continued movement of .the arms. In normal position (seeFig. 4) the front and rear paper clamps are closed and the platen islocated in elevated position, or mother Words, in the writing plane. nThese positions of the parts. are maintained tvith certainty by a pairof pow` erful springs 37 extended between the rock shafts 27 and 33 (seeFigs. 3, 4 and 5) and having their ends secured as by serews38 to shortarms or projections: 39 extended laterally from the two rock shafts.Obviously the springs 37 resist any movement of thc; rock shafts and theparts associated there with from normal position and sei ve to ie- 1tract the shafts and associated parts when i unopposed by a superiorforce.

The manner in which such superior force is exerted, in opposition to thesprings 37 to open the clamps and drop the plateii will now bedescribed. Projecting forwardly from the shaft 33, is an arm 40 hingedat its rear end las indicated at 41 to aprojection 42 on the shaft 33.The arm 40`is intended to have very limited movement from the hinge 4land to thereafter compel, through its continued movement,the rocking ofthe shaft'33. This end is attained by providing the projection 42 with acontact lug 43 and the rear end of the arm 40 with an adjustable contactscrew 44, passed through and carried by a lug or projection 45 on thearm 40. By reference to Fig. 4, it will be seen clampv or platen aredisturbed.

that normally the screw 44is; out ofcontact with the projection-43- Thearm 40 may therefore be depressed until-such contactis effected, atwhich time a rigid-connection will be established between' thc arm 4Oand.the rock shaft 33 so'thatfurther depression of thearm will necessarilyresult inthe' rocking of theV shaft.

At its forward end, the arm 40 is provided with a bearing-roller 46which bears upon" an arm 47, projecting rearwardly from'the front' rockshaft 2T. This arrangement is effected to permit the initial downwardmovement oftliearm 40,-

independently of the rear rock'shaft 33 and -the partsassociatedtherewith, to rock the .rock the .shaft 42. The first resultof this rocking movement will be the depressing of the rear clamping bar29 and the consequent release of the rear paper clamp. During thisoperation, the platen will remain undisturbed because the platendepressing arms, moving with the shaft 33,` will `be absorbing lthe lostmotion between said arms and the brackets 36. As soon as a predeterminedmovementfof the rear clamp has been accomplished, however, the platendepressing arms -will engage'the brackets 36 and continued downwardmovement of the arm 40 will swing the platen downwardly away from thewriting plane on the hinges 12 as an airis and in opposition to theplaten supportingusprings 18. Obviously, the front clamp will continueto move up during the movement of the rear clamp and platen. The rearclamp will continue to move down as the platen is depressed. So far,however, parts are concerned, l they are timed to f lirstV release thefront paper clamp, then release the rear paper clamp and then to dropthe platen.

ThisA timing of the operation is a distinct feature of the presentinvention and accomplishes an important subordinate object thereof. Theretention of the sheets by the rear clamp untilthey have been grasped bvthe operator and put under tension eliminates, in considerable degree,if not wholly, the air pocketling which vis usually incident to thehandling of a number of sheets and materially interferes with theoperation of manifolding. Furthermore, since the -described timing ofthe operation will be reversed as the parts arey being retracted, itwill be seen that when a new set of forms has been drawn over theplaten, the platen will be first restored to normal position, the sheetswill be clamped at the rear end of 'scribed precaution is ever necessaryunder the platen and securely=retained while the operator, bya swiftmovemento the hand over` the sheets, expels'the air and drops thc frontclamp into p1ace,iif' indeed, the de- 7 0 the operating conditions ofthis structure.

The manner inwhichpower isapplied to the arm' 40 may be varied withinwidey limits, but I have shown an operating lever 48, connected atitslrear end as `by a chain 75 49 to any suitable source of power, as forinstance, the treadle, ordinarily employed in connection with machinesof the character under discussion. At an intermediate point` the lever48 is provided. with` a roller 50 f which bears upon the arm 40, and thefront ,end of the lever, which is of twin platecoir struction, is hingedto projections 51 cxtended rearwardly from the front rock shaft 27. Bydepressing the treadle, the lever 48 is swung down to d epresstlie arml40 and thus. operate the clamps and platen, 'iii the manner described,against the' resistance of the retracting springs 37 and the platensupporting springs 18.l Upon the release of the treadle, the parts arereturned to normal position under the retractile force of the springsreferred to.' .The material extension of the tracks and frame structureback of the platen not only provides for the shifting of the machineaway from the platen to facilitate the inspection `and ma-, nipulationof the work, but also accommo-4 dates, inrear of the laten, variousinstru, mentalities for the guiding and guarding of A the paper stripsas they pass from a suit able source of supply to the writing area ofthe plateni In multiple continuous form. writingl for which theillustrated construction is primarily designed, the paper comes in con-`tinuous strips of 'printed or unprinted connected forms. These aresometimes delivered to the user on multiple wound .rollsno -some classesof work where one or more of the paper strips is designed to receivectheprinted matter, which is not to appear on 115 either of the copies,strips of different widths are utilized, as for instance, onefor morenarrow strips imposed uponone 'or more wide strips- In other cases, 4itis desirable to utilize a plurality of strips or iio stances, as willbemore fully described. In

Figs. l, 2, 3, and 9 I have shown idlers 52,

53, 54 extended between the side members 2 and 3 of the frame structurei n rear ot' the transverse member 5. All of these idlers aredemountablc when they are not adapted to the particular work in hand.The idler 54 is located'in substantially the-same horizontal plane asthe writing surface and around it are laid all of the paper strips whichare guided to it by the other idlers 52 and The-latter idlers arepreferably provided with adjustable flanges 55 which may be located soas to properly embrace and guide strips of any particular width whichmay be passed over the idler. It all ot the stripsare the same width,the flanges et lboth idlers are uniformly located, as shown in Fig. l.If, however, certain of the strips lare narrower than the others theymay be guided .over one of the idlers, the flanges of which Vwill beaccordingly adjusted, all of which will? be obvious from an inspectionof Fig. l of the drawings. In like manner, if parallelnarrow strips,or-parallel sets of narrow strips are utilized, the; flanges oftherespective idlers may be adjusted to accommodate them so thatseparate sets of orms may be in position on the platen at the same time.

In' Figs. l0 and ll I have illustrated an arrangement of the platen forthe handlingof paper webs or strips received vfrom rolls. This rollsupporting attachment comprises a frame 56 which fits between thetransverse members 4 and 5 of the frame structure and is provided withdowels 57 which extend into apertures in the bar 5. From this frame 56depends a roll rack consisting of a pair of substantially oblongr sides58 spaced apart to accommodate the rolls connected at their lower endsby tie rods 59and having a downward and rearward inclination to disposethe rolls out of vertical coincidence. Each of these said frames 5Sincludes front and rear members 58 and 5Sb and extending at a' downwardinclination from the rear edge 'of each member are a series of openended slots or seats 6() for the receptionofthe trunnions 61 at the endsof the spools 62 upon which the paper rolls are wound.v

The trunnions extend slightly beyond the outer faces of the members 58aand 58b and are engaged by spring latches or keepers 63l secured attheir, lower ends and adapted to have their upper apertured ends sprunginto and out of engagement with the spool trun to the subjacent seriesof pa er rolls. In the present instance, two o these idler frames areprovided because there are two substantially vertical series of rolls,and five idlers are provided in each l'rame because there are five rollsin each series. Obviously, however, the number of series or sets ofrolls and the number of idler frames may be varied, and in like mannerthe number of rolls in each set and the number of idlers in each frameis immaterial. Normally, the idler frames occupy horizontal positions,as shown in Fig. 10, but to facilitate the threading of the paper stripsover the idlers, the frames may be elevated, as indicated in dottedlines in Fig. l0, and again dropped to their normal positions after thepaper has been threaded.

The carbons, or transfer' webs 67 are preferably led across the platenfrom a multi-wound carbon roll 68 which is dropped into acarbon rollpocket G9 formed between the frame bars 2 and 7 and having a bottom orroll support 70. The ends of the carbons are carried into a similarpocket '7l formed between the frame members 3 and 8, the bottom beingunnecessary and consequently omitted.

At this point it is proper to say that another of the subordinateobjects of this invention is to provide a simple and efficient means forsecurely holding the carbons in place in a manner to permit their propermanipulation with accuracy and certainty. This means comprises a pair ofcarbon clamps, one of which is located in each of the pockets 69 and 71to clamp the carbons securely against the outer walls of the framemembers 7 and 8.- Each of these clamps comprises a pair of parallel bars72 and 73 and three intermediate spreaders 74 of identical construction.Each 'of these spreaders includes interftting members 75 and 76, securedrespectively to the bars 72 and 7 3, and a member '77 b means of whichthe extent ofthe interfittmg relation may be varied to spread the bars72 and 7 3 apart, or to bring the same in closer relation. In theillustrated instances, the member 75 is in the form of a-hollow screwand the member 76 is a pinextended therein; The ad- ]usting member 77 isin the form of a lcnurled nut screwed upon the screw 75 andbearingagainst the bar 73. When the carbons are in lace7 theclamps aredropped into the poc ets andby turning the nuts -77 of the several'spreaders the clamps may be spread ina manner to insure the properclamping of the carbon. In like manner the reverse operation of thespreaders will loosen the carbon and permit the clamps to be readilywithdrawn. To prevent the spreaders from dropping too .far, they areprovided with notched'ends which engafre transverse clamp supportingbars 78 m tion of the carbon clamps when the manipulation of the nut '77permits, is insured by springs 79'exteniling between the bars 72 to proand 73 adjacent to each end of' each clamp.

v`In Figs. 12 and 13 is illustrated a variation of the laten equipmentfor Ithe accommodation of strips Whlch are folded in opposite directionsalong longitudinal folds.

In this arran ement, a .carbon frame 8O is accommodatef between the sidemembers of the frame inl rearV of the transverse frame bar 5. The carbonframe 80 may be in the form of a casting, consisting of a skeletonlbottom 81 and side members 82.V Extending forwardly from theA members82 are supportingy pins or' dowels 83 droppedv into notches 84 in thebar 5. A supporting bar 85 is passed through the'rear'ends of themembers` 82 and has reduced ends 86 received by notched rests-87 securedto the inner faces of the frame members 2 and 3. The bottom 80 of thecarbon frame occupiesa substantially horizontal position, but the upperedges of the`V side members v82 are ste pcd downward from front to rearl dlucel a series of carbonibar supports 88 in different lhorizontalplanes (see Fig.v

' 13). The carbon supporting bars 89 are comparatively thin metalstripsK extended alternately in opposite directions from 'the sidemembers 82 of the carbon frame and secured at one end by a pair of studsor pins 90 carried bythe' bar and extended into, openings 91 in the ysuporting seat. These bars are of insufficient ength to extend entirelyacross the frame and are supported at one end only since each of thesebars is designed -to extend into the open side of the folded strip, andmust of necessity terminate short of the closed side ory foldv thereof.Ob-

, viously, transverse carbons cannot be utilized with theselongitudinally folded strips,

and eachof the carbon `bars 89 is therefore equipped with a carbon clamp92 for the retention-of the rearend of a floating carbon which `extendsforwardly within the fold of the strip to the writing area of the platenfor the purpose of transferrin -the matter printed 'on the upper layer0I the strip to the subjacent layer or layers thereof.

In Fig. 14 is shown a still further variation for' the handling oflongitudinally Y folded strips in either ofl two ways. That is to say,with either` transverse or lioating.

vcarbons. In this arrangement, -the short' lcarbon bars `81 which aresupported at one end only are removable and replaced by bars 93supported attheir opposite ends by the seats 88 to which they aresecured by pins 94, one at each end of each bar, and extended intoanvopening95 in the seat. The bars 93 are each provided with a carbon yClamp 96 which may, if desired, accommovdate fioating'carbons, or, ifthe transverse .97 is thus spaced from vstrips reach the writing area ofthey platen.y

This result is obtained by providing each of the bars 93 with a wirebail or stripperv 97 extended transversely across the carbonyl,

frame, but bent to form oblique fold cutting portions 98 which are disosed in the line'4 of the longitudinal folds o the paperstrips, andserveto stri or shear the paper 'along the lines of the 'I olds as the stripis drawn V forward.

The bail's or strippers 97 are preferably formed from a single piece ofrod-like material which can be bent at its endsto forni the obli ue foldcuttin portions 98. The interme 'ate part of t its bar 93 to support themanifold strip in a smoothed out condition as it approaches the portions98'. A stripperconstructed in this manner has a twoold advantage. Itprevents strips of thin or otherwise unusually flexible character fromsagging or buckling immediately'in advance of the cutting portions 98and thus beingtorn, and it acts as a connecting guard for theforward'ends of said ortions 98, which yends if unprotected mig t diginto and tear such material.` 'It `will therefore` appear that with thisarrangement, the strip, be ore it reaches the strippers 77 is folded inopposite directions along longitudinal linesbut, being separated alongthe lines of the rfolds bythe strippers, proceeds in separatedconditionover the writing area and permits, ifl desired, the use, of thetransverse transfer elements ,as well as ofthe floating carbonsaccordingly as one or the other may be desired.

It is kthought that fromthe foregoing, the

illustrated embodiment of my invention will vbe clearly understood, butI reserve the e baily or stripper;

come' fairly within lius front end with the'support, and depressiblefrom the writing plane.4

2. The combination with a flat platen, '0f a pair of independentlymounted aper clamps, and means common to said c amps and arranged tooperate the clamps one after the other.

3. The combination l,with a fiat platen, of a pair of independently`mounted paper clamps beyond opposite limits of the writing area andcoactingwvith the platen to hold the work sheets, and clamp operatingmechanism common to the clamps -and arranged to operate the clamps oneafter the other. y 4. The combination with a flat platen, o'f front andrear independently mounted paper clampsassociated with opposite ends ofthe platen, and operating means common to the paper clamps and arrangedto operate. said clamps in succession.

5. The combination with a flat platen, of

front and rear independently mounted:

papgr clamps, and operating means common to th clamps and arranged tooperate the front clamp to release the paper and thereafter operate therear clamp to release the p'per. 1

- 6. e combination with a flat platen of paperclamps one of which isarranged to en and hold the paper beyond one end of the platen, andmeans .for operating one of said clamps and for ,depressing the platenfrom the writing plane.

7. Ther combination with va depressible platen, of a 'pair ofindividually movable aper clamps coacting with the platen to Eo d thework sheets, and mechanism for depressing the platen and operating theclam to release the work.

8. he combination with a depressible flat 4 laten, of a pair of paperclamps, and means or operating the paper clamps one after the other andfor thereafter depressing the platen. Y

9. TheV combination with a flat platen movable toward and depressiblefrom the writing lane, of a pair of paper clamps associated with theplaten, and means for moving the platen from below the same to thewriting plane and for thereafter operating the clamps to engage thepaper.

10. The combination with a flat platen movable toward and from thewriting plane, of a plurality of paper clamps, means for operatin theclamps one after another to release t e paper and for moving the fplatenfrom the writing plane, and means or returning the 'p1aten to theWriting plane and for thereafter operating the clamps one after anotherto gri the paper.

11. The combination with a flat platen mounted to swing from one end butnormally located `in the writing plane, a plurality of pa r clampsnormally clamplng the aper ed overthe platen, of means for reeasin theclamps in succession and for swinging the platen away from the writingplane, and a spring for retracting the parts to normal position.

.12. The combination with ja -depressible flat platen, and al paperclamp, of rock shafts connected to the platen and clamp respectively,and means for rocking the shafts to operate the clamp and depress theplaten.

13. .The combination with a fiat platen,

and a paper clamp, of rock shafts con- 14. The vcombination with adepressible -iat platen, and a plurality of paper clamps,

of a rock shaft connected to one clamp, a second rock shaft connected tothe other clamp. and to the platen, and means for rockin said rockshafts.

15. he combination with a depnessible `flat platen, and a pair of paperclamps, of

a rock shaft connected to one clamp, a second rock shaft connected tothe other clamp land to the platen, and means for rocking the shaftstocause the operation of the clamps oneafter the other and to depress theplaten after both clamps have been operated. f i

16. The combination with a platen, of a paper clamp, lincluding engagingmembers one of whichl is in the 4form of a bar movable transverselytoward and from its engaging position and tiltable longitudinally toaccommodate irregularities in thickness of the aper clamped. y

17. he combination with a' vertically movable flat platen, and a pair.of paper clamps, of a rock shaft connected to one clamp, a second rockshaft connected to the other lamp and to the platen, an arm mounted toswing from one rock shaft, means for determining the extent of theindependentmovement of said arm relative to the shaft, a connectionbetween said arm and the other rock shaft, and means for clamp thecarbons fast across the platen,

but independently thereof to the support.

19. The combinationI with a platen, vof a sup )orting frame thereforhaving carbon poe ets, and expansible means `spread between oppositewalls of the pockets to re-l tain the carbon.

20. The combination with a platen and its supportin frame, of a carbonclamp co* acting with t e supportin frame and-comprising parallelbars,an "sprenders intermediate of the bars.

21. A carbon Iclamp comprising a pair of parallel bars, iterfittingmembers between the bars, means for urging the bars apart, andretracting means for drawing the bars toward each other.

22. The combination with a platen supporting frame, and a platen, of apaper roll supporting frame detachebly carried by the platen supportingframe to support a series of paper rolls, and an idler frame movablymounted on the paper roll supporting frame and having a series of idlersover which the llo paper webs areled from the rolls to the platen saididler frame being movable out of normal position to facilitate thethreading of the webs between the idlers.

23. The combination with a platen supporting frame, of apa er rollsupporting rame detachably carrie by the platen supporting frame, andahinged 'idler frame carried bylthe p a er roll supporting frame andvequipped Wit a series of idlers, said lidlers being normally disposedin horizon tal l series but movable to present the series of idlers invertical position to facilitate the threading of the paper Webs. j

24. In-a machine for Writingvon a mani fold strip in combination with aplaten supporting frame and p laten over which the strip isffed, of acar on frame mounted in rear of the platen, carbon suplporting barsarranged in stepped series on t e frame, and

paper strippers and carbon clamps associated with the bars, the paperstrippers ex tendingsubstantially fromend to end of ltheir respectivebars tomaintain tlie strip in flat condition during the strippingoperation.

25. The combination with' a, depressible l flatfplaten and a'pair ofpaper clam s, of

means for causin the operation `o the clam s one after t e other and'forldepressing t e dplaten afterboth clamps have been 26.- In a machine forwriting on a manifold continuous length strip in combination with 'alaten supporting framey and platen, over which the strip is fed, of lasecond frame detachably mounted in the platen supporting frame inre'arof the platen and having stepped su ports, transverse bars detachablymounte on the supports, and bail shaped slitters carried by t e bars andextending fromend to end of their respective bars to support the strip.f

27. The comblnation with a platen supporting frame and platen, of acarbon frame detachably mounted in the platen frame and.

. having stepped supports at opposite sides thereof, transversely disosed carbon bars detachably carried by t e supports, carbon clampscarried bythe bar's, and unitary Aslitterscach carried by a bar and benting member separately mounted .movable mounting in the frame but,coacting to support and retain Work sheets or elements in position to beWritten-A upon,-

and operating means mounted in the 'frame Y and common to the platen andclamps.

30. The combination with a stationary platen supporting frame, of a flatplaten mounted in the frame to swing' toward and from the Writingplane,a clamping member `movably mounted in the frame and coact-- mounted toswing within-tl1efram clamps movably mounted in the frame adjacent toplaten supporting frame, of'a liat platen opposite edgesof the platen'and movable toward and from their clamping positions, and operatingmeans common to the platen and to a clamp.

32. The combination With stationary platen supporting frame, of a fiatplaten mounted to swing Within the frame, clamps movably mounted in theframe adjacent toV opposite `edges of .the platen and movable in theframe toward and 4from their clamping positions, and 4means mountedinthe frame and operative to swing the platen and to operate theclamps.r

The combination Witha platen-supporting frame, of .a platen having ahinged mounting at on'e end thereof Within the frame, a clamping'membermovablymounted in the frame and coaeting with the hinged end of theplaten, and means mounted in the frame and operative to swing the platenand to operate the clamp.

34. In a typewriter, in combination, a support, flat platen adjustabletoward and from the Writing plane, clamps upon the support adjacentdifferent edges of the platen and an ,operating mechanism common totheplaten and the clamps and adapted for raising the platen and thenadjusting the clamps successively.

In a machine of thel character described, .a Hat platen for supporting acontinuous manifold strip of material as it is fed thereover, saidplaten being hinged for movement toward the Writing plane, clampsrelatively arranged to clamp the strip upon the platen atdifferent-points in the length of ythe strip, and meansv 'for moving theplaten toward said plane and for operating the clamps in successivelorder corresponding in direction to the Vdirection in Which the strip isfed to facilitate expelling air from between the folds of the strip.

86. In amachine of the class described, in combination, a flat platenfor supporting a continuous length manifold strip as it is `fedthereover, saidtoward or from a fWriting plane, clamps for platenbeingmovable i es clamping the strip in position relative to the platen, oneof the clamps. being arranged to engage and hold the strip beyondstripiagainstone edge of the platen, anda l hinge connection betweensaid edge of the platen and the support permitting the platen 'to beswung toward and from a writing plane and including rovision for aseparate adjustment of sai edge of the platen relative to said clamp inaccordance with the thickness of the strip.

38. ln a machine for writing on a mani-- fold continuous 4length stri incombina tion, a platen over which t e strip is designed to be fed, aframe supporting the platen, a second frame mounted in the platensupporting frame, transverse bars mounted on the second frame in superosed relation. devices for attachin carbon s eefs lto the liars,androd-1ike s itters one for each bar substantially coextensive inlength therewith and bent to formvoppositely inJ clined slittingportions. f i

In testimony whereof I hereunto aix my signature.

HARRY ARTHUR RooTHoRAR

